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2013 Fiscal Year Final Research Report

Towards a comprehensive understanding of the chlorophyll breakdown pathway

Research Project

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Project/Area Number 23570042
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Plant molecular biology/Plant physiology
Research InstitutionHokkaido University

Principal Investigator

TANAKA Ryouichi  北海道大学, 低温科学研究所, 准教授 (20311516)

Project Period (FY) 2011 – 2013
Keywordsクロロフィル
Research Abstract

For better understanding of the chlorophyll breakdown pathway in plants, we investigated the function of chlorophyllase, a common plant enzyme that catalyzes the cleavage of chlorophyll to form chlorophyllide and phytol. We found that this enzyme is localized in the endoplasmic reticulum and the tonoplast. This enzyme actively catalyzes chlorophyllide formation only when cells are disrupted. Arabidopsis leaves with genetically enhanced CLH activity exhibit toxicity when fed to Spodoptera larvae, an insect herbivore. Purified chlorophyllide partially suppresses the growth of the larvae. We showed that chlorophyllase and chlorophyll form a two-component defense system against chewing herbivores.

  • Research Products

    (15 results)

All 2014 2013 2012 2011 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (8 results) Remarks (1 results)

  • [Journal Article] Functional analysis of light-harvesting-like protein 3 (LIL3) and its light-harvesting chlorophyll-binding motif in Arabidopsis2014

    • Author(s)
      Takahashi K, Takabayashi A, Tanaka A, and Tanaka R
    • Journal Title

      J Biol Chem

      Volume: 289 Pages: 987-999

    • DOI

      10.1074/jbc.M113.525428

    • Peer Reviewed
  • [Journal Article] Simple extraction methods that prevent the artifactual conversion of chlorophyll to chlorophyllide during pigment isolation from leaf samples2013

    • Author(s)
      Hu X, Tanaka A, and Tanaka R
    • Journal Title

      Plant Methods

      Volume: 2013, 9:19

    • DOI

      10.1186/1746-4811-9-19

    • Peer Reviewed
  • [Journal Article] Stay-Green Plants : What do they tell us about the molecular mechanism of leaf senescence2013

    • Author(s)
      Kusaba M, Tanaka A and Tanaka R
    • Journal Title

      Photosynth Res Published Online

    • DOI

      10.1007/s11120-013-9862-x

    • Peer Reviewed
  • [Journal Article] "Chlorophyll metabolism in photosynthetic organisms." in Handbook of Porphyrin Science, edited by Karl M Kadish, Kevin M Smith and Roger Guilard2012

    • Author(s)
      Tanaka R, Takabayashi A, Ito H, Tanaka A
    • Journal Title

      Word Scientific, Singapore

      Volume: 20 Pages: 213-242

    • Peer Reviewed
  • [Journal Article] クロロフィル合成系の多様性はいかにして生まれたか?2012

    • Author(s)
      伊藤寿, 田中歩, 田中亮一
    • Journal Title

      光合成研究

      Volume: 22 Pages: 98-105

    • URL

      http://photosyn.jp/journal/sections/kaiho64-6.pdf

    • Peer Reviewed
  • [Journal Article] Overproduction of chlorophyll b retards senescence through transcriptional re-programming in Arabidopsis

    • Author(s)
      Sakuraba Y, Balazadeh S, Tanaka R, Mueller-Roeber B and Tanaka A
    • Journal Title

      Plant Cell Physiol

      Volume: 53 Pages: 505-517

    • DOI

      10.1093/pcp/pcs006

    • Peer Reviewed
  • [Presentation] Possible involvement of chlorophyllase in a plant defense system2013

    • Author(s)
      Xueyun Hu, Masanori Oshiai, Tohru Tsuchiya, Stefan Hortensteiner, Ayumi Tanaka, Ryouichi Tanaka
    • Organizer
      第54回日本植物生理学会
    • Place of Presentation
      岡山大学、岡山市
    • Year and Date
      2013-03-22
  • [Presentation] 植物のテトラピロール代謝2012

    • Author(s)
      田中亮一
    • Organizer
      植物電子顕微鏡サマーセミナー
    • Place of Presentation
      帝京大学バイオサイエンス学科棟、宇都宮市
    • Year and Date
      20120803-04
  • [Presentation] Modification of chlorophyll metabolism stays plants green through transcriptional re-programming2012

    • Author(s)
      Tanaka R
    • Organizer
      Japan-Australia Symposium on Plant Sciences for Agriculture
    • Place of Presentation
      北海道大学、札幌
    • Year and Date
      20120119-20
  • [Presentation] Chlorophyllase1 is not involved in chlorophyll breakdown during methyl-jasmonate-induced programmed cell death in Arabidopsis thaliana2012

    • Author(s)
      Hu X, Tsuchiya T, Hörtensteiner S, Tanaka A, Tanaka R
    • Organizer
      Japan-Australia Symposium on Plant Sciences for Agriculture
    • Place of Presentation
      北海道大学、札幌
    • Year and Date
      20120119-20
  • [Presentation] 遺伝学、逆遺伝学、バイオインフォマティクス、複合体プロテオミクスの手法を利用したテトラピロール代謝研究2012

    • Author(s)
      田中亮一
    • Organizer
      ラン藻の分子生物学2011
    • Place of Presentation
      かずさDNA研究所、木更津市
    • Year and Date
      2012-12-02
  • [Presentation] Seeking the true function of chlorophyllase after one hundred years of discovery2012

    • Author(s)
      Ryouichi Tanaka
    • Organizer
      Second International Symposium on Biosynthesis of Tetrapyrroles (BSTP12)
    • Place of Presentation
      Ritsumeikan University, Minami-Kusatsu, Japan
    • Year and Date
      2012-12-01
  • [Presentation] Chlorophyllase1 is not involved in chlorophyll breakdown during methyl-jasmonate-induced senescence in Arabidopsis thaliana2012

    • Author(s)
      Hu X, Tsuchiya T, Hörtensteiner S, Tanaka A, Tanaka R
    • Organizer
      第53回日本植物生理学会年回
    • Place of Presentation
      京都産業大学、京都市
    • Year and Date
      2012-03-18
  • [Presentation] Identification of cyanobacterial enzymes involved in tetrapyrrole metabolism reveals convergence and divergence of tetrapyrrole metabolism2011

    • Author(s)
      Tanaka, R.
    • Organizer
      Bionational Seminar Germany-Japan
    • Place of Presentation
      Schloss Reinach, Freiburg, Germany
    • Year and Date
      2011-10-31
  • [Remarks]

    • URL

      http://www.lowtem.hokudai.ac.jp/plantadapt/

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Published: 2015-07-16  

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